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If 2cosθ + 8sin2θ = 11, where 0o < θ < 90o, then find the value of cot θ.
What is the value of [(tan 5θ + tan 3θ)/4 cos 4θ (tan 5θ – tan 3θ)]?
If sin(x + y) = 1 and sin(x - y) = (1/2), then what is the value of sinx cosx + 2sin2y + cos2y?
From a point on the ground, the angle of elevation of the top of a building is 45°. After walking 10 meters towards the building, the angle of elevatio...
If A + B = 450 , then the value of 2(1 + tanA) (1 + tanB) is:
If sin (2x + 50) o = cos (2y - 50) o, such that, 0o < x + y < 90o, then find the value of tan(x + y) .
Simplify: sin (A + B) sin (A - B)
If cos² x + sin x = 5/4, then find the value of 'sin x'.